Experimental helminthiasis in parasite-free calves on marshland pastures.
D000818:Animals; D002170:Canada; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000662:veterinary*; D008297:Male; D006109:Poaceae; D013272:Stomach Diseases / Q000662:veterinary*; D014252:Trichostrongyloidiasis / Q000453:epidemiology / Q000662:veterinary*